Intermittent thread-cutting temple



y 1930. H. H. BURDETT 1,758,882

INTERMITTENT THREAD CUTTING TEMPLE Filed June 5, 1929 I Fig.1.

G0 I2 9 S8 56 4s 62 4S 27 1 3s as Fig.2.

4o lnvenTor.

yfud Ho'race Burden.

Patented May 13, 1930 UNITED STTEg T OFFECE HORACE E. BURDETT, OFHOPEDALE, MASSACHUSETTS, ASSIGNOB TO DBAPER CORPO- RATIOII, OF HOPEDALE,MASSACHUSETTS, CORPORATION OF MAINE INTERMITTENT THREAD-CUTTING- TEMPLEApplication filecl June 5, 1929. Serial No. 368,687.

This invention relates to a mechanism for trimming off close to theselvage the filling ends left projecting therefrom during the weavingoperation. Such ends occur particularly as a result of the operation ofthe automatic filling replenishing loom wherein each time the filling ischanged or replenished both the discharged filling carrier and the freshfilling carrier leave ends projecting at the selvage which must beremoved. In the present invention the filling severing mechanism iscarried by the shank or bodily movable member of the usual temple and isoperated intermittently, as, for example, at the time of fillingreplenishment, so that the filling severing mechanism is not subject tothe wear due to continuous operation but only acts occasionally andduring the short periods required to effect the trimming ofi of thefilling ends. 1

The object of the invention is to provide an intermittent fillingsevering mechanism in which, when this mechanism is in inactiveposition, it shall be held out of engagement with the lay or otheractuating part of the loom and in which its withdrawal to this positionshall be effected by the relative sliding movement between the templestand and temple shank.

The object of the invention is further to provide simple, novel andeffective means for securing the intermittent operation of the fillingsevering mechanism. r

The object of the invention is further to provide an intermittentlyoperating selvage trimming mechanism carried by the temple in which thefilling severing mechanism is bodily and laterally adjustable toposition it close to the selvage.

The nature and objects of the invention will appear more fully from theaccompanying description and drawings and will be particularly pointedout in the claims:

As the invention is applicable to various type of looms and is concernedonly with the severing of the filling ends of the selvage, it is onlynecessary here to illustrate and describe a preferred form of theinvention and those parts of an ordinary type of automatic fillingreplenishing loom immediately associated therewith.

In the drawings:

Fig. 1 is a side elevation partially in cross section of a portion of aloom with the temple of an ordinary type mounted thereon and with apreferred form of the invention embodied therein.

Fig. 2 is a top plan view of the construction shown in Fig. 1.

Fig. 3 is a detail chiefly in vertical cross section taken on the line33 of Fig. 2.

Fig. 4 is a detail in side elevation showing detent mechanism.

Fig. 5 is a detail in cross section taken on the line 5-5 of Fig. 3.

In the construction of loom illustrated, the side frame 1, to which theusual breast beam 9. is connected, carries the usual starting rod 3 fromwhich extends upward an arm 4. In a the automatic type of fillingreplenishing loom such a starter rod 3 is commonly employed and, uponthe call for filling replenishment, is rocked in a direction to swingthe arm 4 to the left. The lay 5 of the loom is illustrated carrying theusual reed 6 and acting to beat the filling into the cloth 7 at the fell8 in the usual manner.

An ordinary type of temple is shown mounted on the breast beam andextending rearward to act upon the cloth forward of the fell. Thistemple is shown as compris ing a box-like stand 9 carried by a bracket10 secured to the breast beam 2 and a shank 11 mounted to slide in thestand 9. This shank is normally projected rearward by the usual spring12 in the stand and is given a slight forward sliding movement in thestand by the engagement of the lay 5 of the loom at each beat-up with aheel 13 rigid with and depending from the shank. At its rearward end theshank is formed to present the usual temple head 14 from which projectslaterally the usual cap 15 and pod 16 between which is journalled thetemple roll 17.

While the filling severing mechanism may be of various types so far ascertain features of the present invention are concerned, it ispreferably of that type in which it is bodily adjustable laterally withrespect to the shank so as to enable the cutting operation to beperformed close up to the selvage of the cloth. Since the cloth as itpasses around the temple roll has the selvage extending between theplanes of the ends of the temple roll, the filling severing mechanism,when laterally adjusted to sever the filling ends close to the selvage,also has its field of action between the planes of the ends of thetemple roll.

In the preferred construction illustrated, the shank 11 which forms thesupport for the filling severing mechanism has mounted therein a rod 18extending laterally just forward of the temple head and above the planeof the cloth. This rod at its outer end is threaded and provided with anut 19. Forward of this rod the shank of the temple is formed with a hub20 and in this hub a shaft 21 extending parallel with the rod 18 ismounted to slide and rotate.

The severing mechanism comprises a pair of cooperating cutter bladeswhich operate in a plane substantially normal to the path of the clothand which at their effective portions stand substantially parallel tothe selvage forward of the fell. In the construction illustrated, one ofthese blades is a rela tively fixed blade and the other a relativelymovable blade, while the two blades together also have a. bodily lateralmovement or adjustment to enable their effective portions to bepositioned and maintained close to the selvage.

The fixed cutter blade member is shown as a metal plate 22 recessed atits bottom edge to fit over the temple head. This plate has formedthereon or rigid therewith a long hub 23 which extends laterallytherefrom and is mounted to slide on the rod 18. This plate alsoapertured at its forward end to fit over the shaft 21. At its rear endthe plate 22 is formed into a narrow vertical finger 2% adapted to restagainst the edge 25 of the cloth and presents a. notch 26 in the planeof the cloth to receive the filling end as the cloth advances in theweaving operation. The cutting edge of the fixed blade 22 is presentedby the edge of thisnotch 26, and the finger 2% may be formed of aseparate piece of hardened steel 27 secured to the blade 22.

The movable cutter blade 28 is shown as of general hook shape alsofitting over the temple head in general parallelism with the fixedblade. Its extreme rear end is beveller off to present a cutting edge 29to cooperate with the cutting edge of the notch 26 in toe fixed cutterblade. This movable blade 28 is shown as secured to the shaft 21 andthus as pivotally mounted in the shank 11. The movable blade is held inclose contact with the fixed blade preferably by means of a stud 30secured in the movable blade 28 and projecting through a slot 31 in thefixed blade 22 and by a coiled spring 32 surrounding the stud 30 andextending between the fixed blade 22 and a washer secured by a cotterpin at the end of the stud 30. This movable cutter blade is preferablymade of steel.

The opening movement of toe severing mechanism, in the constructionillustrated, effected by a spring 33 located in a recess in the fixedblade 22 having one end abutfing the lower end of said recess andtherefore fixed and the other end abutting the stud 30 and thus actingnormally to raise the movable cutter blade 28. The extreme limits ofmovement of the blade 28 may be determined by the length of the slot 31.The closing movement of the filling severing mechazn m by which thefilling ends are severed, in the pre ferred construction illustrated, issecured by the lay 5 engaging and moving forwarr :1 depending heel 3a,which thereupon acts to swing the movable cutter blade 28 downward toclose over the cutting ecge of the notch 26 and thus sever any fillingends extending in its path.

The entire severing mechanism is adjustable to locate the blades closeup must the selvage forward of the fell by ad usting the nut 19 on therod 18, a spring 35 on the rod between the shank and the fixed blade 22tending to slide the entire severing mechanism in the direction of thenut and either against the selvage or against the nut. This spring 35 ispreferably of a light character and may be arranged so that it willpress the severing mechanism to maintain the finger 2 2 against theselvage 25. In such case, the int 19 acts simply as a stop to limit theinward movement which is assisted by the shock and jar of the loom andthus enables the severing mechanism to be maintained against the selvageand to shift laterally with any change in the path of the salvage.

It is desirable, in view of the mechan sm employed for securingintermittent operation of the severing mechanism, that the dependingheel 34 shall be located in fixed lateral position and not partake ofany lateral movement or adjustment of the filling; severing mechanism.As a convenient means for ac complishing this result, the shaft showngenerally at 21 in Fig. 2 is made in two telescoping, relativelynon-rotatable sections, one secured to the depending heel 34 and theother secured to the movable cutter blade 28. This construction is shownin detail in Fig. 5. The first section 36 of this shaft is ournallcd inthe stand 11 and hub 20 and presents at its inner end a flange 37fitting in the recess of a countersunk washer 38 which rests against theface of the shank. The outer end of this section 36 has clamped theretothe depending heel 34 by means of the set screw 39. The other section 40of the shaft is journalled in the aperture of the fixed blade 22 and hasan enlarged section 41 rigidly secured to the movable blade 28. A washer42 and cotter pin 43 are mounted on the outer end of this section andwith the enlarged section 41 of the washer 42' prevent any endwisemovement of this shaft section with respect to the fixed blade 22,except such as is necessary to permit the movable against the fixedblade. The shaft section is provided with a flat tongue 44 fitting in acorrespondingly shaped recess 45 in the shaft section 36 so that the twoshaft sections will rotate together but may be laterally separated.

It will thus be seen that with the mechanism thus far described, the layupon each beat-up will en age the depending heel 34, efiecting theclosing movement ofthe severing mechanism and that upon. each retractingmovement of the lay, the spring 33 will effect the opening movement ofthe severing mechanism. In order to obviate the continual wear and tearupon the severing mechanism. which would thus be occasioned. provisionis made for an intermittent operation, as a result of which the severingmechanism only operates when required, as when filling replenishmenttakes place. But in order to render such an intermittent operation fullyeffective, it is necessary to withdraw theclosing means, as, forexample, the depending heel 34, to a position where it will not be evenpartially actuated or, as in the type of construction illustrated,entirely out of reach of the lay upon the beat-up. This latter result issecured in the present invention by making use of the relative slidingmovement which takes place between the temple stand and the temple shankat each beat-up of the lay. In the preferred construction illustrated, aratchet wheel 46 is journalled on astud 47 secured by a nut 48 in theshank parallel with and above the shaft 21. Rigid with the ratchetwheel, and consequently rotatable therewith, is a locking lug 49 of suchdimensions that when it is in locking position, as shown in Fig. 1, itwill engage the extension 50 of the depending heel 34 and hold thedepending heel forward of the temple heel 13 and consequently entirelyout of reach of the lay. When in this position. the filling severingmechanism is closed and any actuation of the fillingsevering mechanismis prevented. When the locking lug is turned away from looking position,the filling severing mechanism is restored to open position through theaction of the spring 33. One of the teeth of the ratchet wheel 46 iselongated at one face of the ratchet wheel to form a starter tooth 51. Asuitable detent shown as a springpressed plunger 52 carried by theshankll acts to prevent reverse rotation of the ratchet wheel.

An actuating pawl for the ratchet wheel is mounted on the fixed stand 9.For this purpose a pawl-carrying lever 53 is fulcrumed at 54 on thestand. The actuatingpawl 55 is in the form of a finger having its shank56 blade to be pressed adjustably mounted in the upper arm of the lever53 by means of the set screw 57. The pawl carrying lever is movableabout its fulcrum between an active and an inactive position. Its activeposition is determined by the set screw 58 adj ustably mounted in thestand and when in this position the pawl 55 will be in the path of theteeth of the ratchet wheel 46 as the shank 11 slides forwardly in thestand. The inactive position is limited by the set screw 59 adjustably.mounted in the stand and when in this position the pawl will pass abovethe teeth of the ratchet wheel upon the forward movement of the shank.

Suitable means are provided for moving the pawl to active position andas it is desired that the filling severing mechanism shall operate uponfilling replenishment in the case of an automatic filling replenishingloom, the arm 4 is utilized for moving the pawl to active position as apreferred embodiment of this feature of the invention. The forward endof the lever is bent downwardly as shown and cooperates with aspring-pressed detent pin 60 mounted in the stand. Normally this pinrests against the upper surface 61 of the pawl carrying lever 53 holdingthe pawl in inactive position, and the end of the arm 4 is normallylocated just beneath the forward end of the lever 53. Upon the call forfilling replenishment, the shaft 3 is rocked, swinging the arm 4 to theleft, thus snapping the lever 53 upward past the detent pin 60, whichthen engages the surface 62 and holds the pawl in active position.

Assuming now that the parts are in the position shown in Fig. 1, it willbe seen that the filling severing mechanism is closed, the dependingheel 34 is well forward of the temple heel 13 and consequently out ofreach of the lay upon the beat-up, the locking lug 49 is holding theparts in this position. the actuating pawl 55 is in inactive positionand the detent 60 is holding the pawl carrying lever with the pawl insuch )osition. While the parts are in this position, each time the laybeats up, it engages the heel 13 and moves the stand 11 with the partscarried thereby forward, but since the depending heel 34 cannot bereached by the lay, there is no operation of the filling severingmechanism and no wear thereupon.

hen, however, the call comes for filling replenishment, the arm 4 swingsto the left, throwing the pawl carrying lever to active position, andupon the next beat-up of the lay the starter tooth 51 engages the pawl55, the ratchet wheel is rotated, the depending heel 34 is unlocked, andthe filling severing mecha nism moves to open position. Upon eachsucceeding beat-up, the filling severing mechanism is actuated becausethe lay now engages the depending heel 34 and the ratchet wheel isrotated step by step by the pawl. This operation continues with thefilling severing mechanism operating at each beat-up until the rotationof the ratchet wheel has again brought the locking lug 49 into lockingposition. But when the locking lug comes into locking position, thestarter tooth comes beneath the pawl so that upon the next rearwardmovement of the shank, the pawl is thrown upward by the starter toothsuficiently to cause the forward end of the pawl carrying lever to snapdown past the detent pin and bring the pawl carrying lever and pawl toinactive position. Thereupon the parts are again in the position shownin Fig. 1.

Thus it will be seen that each time the looking lug is released, thefilling severing mechanism acts for a predetermined number of times,depending upon the number of teeth on the ratchet wheel and the angularrotation given to the ratchet wheel by the pawl. Upon the conclusion,therefore, of a prec etermined number of beat-ups, the intermittentaction ceases and the filling sev ring mechanism is locked in closed orinoperative position with the closing means withdrawn from actuation orfrom engagement by the lay. It will also be seen that these results aresecured by the making use of the relative sliding movement which takesplace between the temple shank and the stand in which it is mounted. Itwill further be seen that all of this is effective quite independentlyof the bodily lateral position of the filling severing mechanism withrespect to the selvage of the cloth. I

Having thus described the invent-ion, what is claimed as new, anddesired to be secured by Letters Patent, is:

1. A thread cutting loom temple comprising a stand, a shank slidablerearward in the stand by a spring and forward by the lay on the beat-up,filling severing mechanism mounted on the shank means acting to opensaid mechanism, means engaged and actuated by the lay upon the beat-upto close said mechanism, and means actuated by the relative slidingmovement of the stand and shank to withdraw said closing means fromengagement by the lay and lock it in withdrawn position after apredetermined number of beatups.

2. A loom comprising a frame, a lay and means for moving it, an arm onthe frame moved upon the call for filling replenishment, a temple standon the frame, a shank slidable forward in the stand by the lay on thebeat-up, a spring acting to slide the shank rearward, filling severingmechanism mounted on the shank, means acting yieldingly to open saidmechanism, means engaged and actuated by the lay upon the beat-up toclose said mechanism and thereby sever filling ends in its field, meansactuated by the forward sliding movement of the shank to withdraw saidclosing means from engagement by the lay and lock it in withdrawnposition after a predetermined number of beat-ups.

3. A loom comprising a frame, a lay and means for moving it, an arm onthe frame moved upon the call for filling replenishment, a temple standon the frame, a shank slidable forward in the stand by the lay on thebeat-up, a spring acting to slide the shank rearward, filling severingmechanism mounted on the shank, means acting yieldingly to open saidmechanism, means engaged and ac tuated by the lay upon the beat-up toclose said mechanism and thereby sever filling ends in its field, andmeans actuated by the relative sliding movement of the stand and shankto withdraw said closing means from engagement by the lay and lock it inwithdrawn position after a predetermined number of beatups and torestore said closing means to actuation through the movement of the armupon the call for filling replenishment.

4. A thread cutting loom temple comprising a stand, a shank slidable inthe stand by the lay on the beat-up, filling severing mechanism mountedon the shank a ratchet wheel journalled on the shank having a startertooth and a locking lug which when in locking position acts to hold thesevering mechanism in inoperative position, an actuating pawl mounted onthe stand and movable between an active and an inactive position, andmeans to move the pawl to active position where, upon forward slidingmovements of the shank, the pawl will rotate the ratchet wheel step bystep turning the locking dog away from locking position and, after aplurality of said forward movements, bringing the locking lug to lockingposition and the starter tooth beneath the pawl, the said starter toothupon the succeeding rearward sliding movement of the shank acting tomove the pawl to inactive position.

5. A thread cutting loom temple comprising the construction defined inclaim 4, together with means for yieldingly retaining the pawl in eachof its two positions.

6. A thread cutting loom temple comprising a stand, a shank slidable inthe stand by the lay on the beat-up, filling severing mechanism mountedon the shank, a ratchet wheel journalled on the shank havin a startertooth and a locking lug which when in locking position acts to hold thesevering mechanism in inoperative positon, a pawl carr ing lever pivotedon the stand and movable between an active and an inactive position, apawl adjustably mounted in the pawl carrying lever, means to swing thepawl carrying lever to active position where, upon forward slidingmovement of the'shank, the pawl will rotate the ratchet wheel step bystep turning the locking dog away from looking position, and after aplurality of said forward movements, bringing the locking lug to lookingposition and the starter tooth beneath the pawl, the said starter toothupon the succeeding rearward sliding movement of the shank acting tomove the pawl carrying lever and pawl to inactive position.

7. A thread cutting loom temple comprising a stand, a shank slidable inthe stand and having a depending heel to be engaged by the lay on thebeat-up to eliect the forward sliding movement of the shank, fillingsevering mechanism mounted on the shank, a shaft having a dependingoperating heel in the path or" and moved by the lay on the beat-up toactuate the filling severing mechanism, means for bodily adjusting thefilling severing mechanism laterally with respect to the shank and thedepending operating heel, and means actuated by the relative slidingmovement of the stand and shank to withdraw said heel from the reachofthe lay and lock it in said withdrawn position after a predeterminednumber of beat-ups.

8. A thread cutting loom temple comprising a stand, a shank slidable inthe stand by the lay on the beat-up, filling severing mechanism mountedon the shank and having a depending operating heel in the path of andmoved by the lay on the beat-up to actuate said mechanism, and meansactuated by the relative sliding movement of the stand and shank toWithdraw said heel from the reach of the lay and lock it in saidwithdrawn position after a plurality of beat-ups.

9. A thread cutting loom temple comprising a stand, a shank having adepending heel and slidable rearward in the stand by a spring andforward by the engagement of the lay with the heel on the beat-up,filling severing mechanism mounted on the shank and having a dependingheel in the path of and moved by the lay on the beat-up to actuate saidmechanism, and means actuated by the relative sliding movement of thestand and shank to withdraw said latter heel to a position forward ofthe former heel out of reach of the lay and to lock it in said withdrawnposition after a plurality of beat-ups.

In testimony whereof I have signed my name to this specification.

HORACE H. BURDETT.

